Attachment op rudders



UNITED sTATEs PATENT oEEroE.

B. F. DELANO, OF BOSTON, MASSACHUSETTS.

ATTACHMENT or EUDDERS.

Specication of Letters Patent No. 26,971, dated January 31, 1860.

To all 'whom it may concern:

Be it known that I, B. F. DELANO, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and Improved Attachment to Rudders, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which- Figure l, is a perspective view of the stern of a vessel with my improvements attached. Fig. 2 a section through the rudder and its fastenings. Figs. 3, and 4 details to be hereafter referred to.

My invention has for its object to prevent the vibration and shaking of the rudder which is so wearing upon the pintles and their bearings, and my invention consists in a device for tightening up the rudder and preventing its play or jarring whilst it is still left free to swing on its pintles as usual.

That others skilled in the art may understand and use my invention I will proceed to describe the manner in which I have carried out the same.

In the said drawings A, is the deck of the vessel B, the stern post, C the rudder, the pintles a and their bearings do not differ from those in ordinary use.

At f (Fig. 2) and detached in Fig. 3 is seen the saucer which assists to sustain the weight of the rudder the pintle being al lowed to project a short distance int-o the saucer a hole 1, (Fig. 3,) of the size of the pintle being prepared for the purpose.

To prevent the vibration or shaking of the rudder I employ the following device,- g Fig. 1, is a metallic block which is applied to the stern post immediately in front of the rudder where it is secured in place by screws or otherwise. 7L, (Fig. 4) is another metallic block which is fitted to the rudder directly opposite to the block g where it is also held by screws. In a female screw m, in the center of the block z., works a screw c having a sphere a, upon its outer end which fits in a hemispherical depression in the outer face of the block g, seen dotted in Fig. L1 and in section in Fig. 2. These parts are put together and applied to the vessel as followsimmediately above the light load line the blocks g and h, are fitted to the stern post and rudder the screw 7c, bein first inserted into the block h, the rudder 1s then turned and the parts are set perfectly true that there may be no friction or binding of the parts, and the screws which hold the blocks g and 7L, in place are put in. The screw la, is then turned by a marling spike or other suitable pin inserted in a hole in the sphere, until the latter bears firmly upon the block g. The pressure thus produced efectually prevents the vibration of the rudder, and

should the sphere at any time become loose in its socket it may be tightened again by turning the screw le, as before described. It is manifest that in addition to preventing the vibration of the rudder the above described device also serves the purpose of preventing the rudder from being unshipped.

To prevent the slash of the rudder when struck by a sea froln being communicated with too great a shock to the steering wheel I have devised the following arrangement of the tiller.

Referring to Fig. 1, D, is the rudder head, E, the tiller which passes through the rudder head thwart ships and has pivoted to each end of it a bar G which projects aft and is furnished at its outer end with a roller r, which bears against and travels in contact with the curved face s, of a heavy plank or frame F secured to the deck abaft the rudder head. Each of the bars G, is also furnished with a slot 5 extending a considerable portion of its length in which plays a stout bar H, which is reduced in thickness toward each end and is left thicker in the middle to Aform shoulders 6 which prevent it from being drawn through the slots on the bars Gr. The tiller rope t, is passed around a barrel I, on the shaft of the steering wheel K, and passes through a block in the stanchion L on each side of the deck, thence through the ends of the bar II, and back to each stanchion L, where the ends of the rope are secured.

It will be perceived that as the wheel K, is turned in either direction the bar H, will be drawn longitudinally by the rope t, and the shoulder 6 of this bar bearing against the inner side of the bar Gr, will carry it around with the roller r, in its outer end bearing against and following the curve s. This moves the tiller E, as required the rope t drawing in a line at right angles to the wheel shaft.

When the rudder C, is turned at an angle to the stern post B, the blow of a wave striking against the front face of the rudder is lors` received endwise by the bar G (which is on the side to which the rudder is turned) and this bar bearing against the frame F, the tiller E is not allowed to slash round; whilst a blow on the back of the rudder, only causes the bars G, to slide endwise over the bar H, which plays in the slots 5, and the steering wheel K is not materially aeeted by the blow.

What I claim as my invention and desire 10 tosecure by Letters Patent is- The above described device g, 7L, lo, or its substantial equivalent for tightening up the rudder, operating substantially as described. v

B. F. DELANO.

Witnesses:

Trios. R. RoAoH, Y P. E. TEXHEMACHER. 

